A smelting furnace for continuously smelting blister copper from copper sulfide concentrate and its smelting method

Abstract

The invention provides a smelting furnace for continuously smelting blister copper through copper sulfide concentrate and a smelting method of the smelting furnace. The smelting furnace is an integrated metallurgical furnace with the front-end top-blown smelting function, the middle electric furnace setting function and the tail-end matte continuous converting function and comprises a front-end top-blown smelting furnace, a middle setting electric furnace and a tail-end matte continuous converting furnace with the bottoms communicated sequentially. According to the smelting method, the procedures that the copper sulfide concentrate is continuously smelted into mixed melt of matte and slag through the converting furnace, settling separation of the matte and the slag is performed continuously, and the matte is continuously blown into blister copper are not needed. The three metallurgical processes that the copper sulfide concentrate is smelted into the mixed melt of the matte and the slag, settling separation of the matte and the slag is performed, and the matte is continuously blown into the blister copper can be continuously finished, the equipment structure and the operation process are simple, energy consumption is low, and environmental friendliness and safety are achieved.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal metallurgical equipment and methods, in particular to pyrometallurgical equipment and methods for copper sulfide concentrate. Background technique [0002] The method of smelting copper sulfide concentrate to produce copper is generally divided into two main smelting production process steps. The first step is to smelt copper sulfide concentrate into matte and low copper slag, and the second step is to blow smelt matte into crude copper. The traditional copper smelting process is smelting copper concentrate with blast furnace and blowing matte into blister copper with reverberatory furnace, which is characterized by simple process method, small scale, high energy consumption, high labor intensity and serious environmental pollution. [0003] Focusing on the two central issues of air pollution prevention and control and energy conservation, many new copper smelting processes with their ow...

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Problems solved by technology

The disadvantage of this method is that the correlation between the three furnaces is too high, and the mutual constraints are relatively large. A little careless operation will make the process difficult to continue. Therefore, this process is rarely popularized and applied at present.

[0004] The above-mentioned equipment and methods are not only complicated in equipment, large in investment, and complicated in process, but also have a common problem, that is, the slag process of smelting copper sulfide concentrate into matte and low copper is not continuous with the process of blowing matte into blister copper. , A converter is required between the two processes, that is, the matte and low-copper slag and mixed melt obtained from the smelting of the previous process are transferred to the blowing furnace for blowing blister copper through intermediate equipment, which consumes energy, time, and low work efficiency. The overflow of flue gas in the converter process will cause great environmental pollution, and there are still potential safety hazards

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